1221223110202 has 8 divisors (see below), whose sum is σ = 1833021860256. Its totient is φ = 610215823452.

The previous prime is 1221223110157. The next prime is 1221223110229. The reversal of 1221223110202 is 2020113221221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1221223110202.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 197861968 + ... + 197868139.

It is an arithmetic number, because the mean of its divisors is an integer number (229127732532).

Almost surely, 2^{1221223110202} is an apocalyptic number.

1221223110202 is a deficient number, since it is larger than the sum of its proper divisors (611798750054).

1221223110202 is a wasteful number, since it uses less digits than its factorization.

1221223110202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395731652.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 1221223110202 its reverse (2020113221221), we get a palindrome (3241336331423).

The spelling of 1221223110202 in words is "one trillion, two hundred twenty-one billion, two hundred twenty-three million, one hundred ten thousand, two hundred two".